No real complaints, although 12mp would've been slightly better, as would the current 920k LCD's.

I had no intentions of purchasing this camera, but a super cheap and low-mileage copy sprung up and I had to bite. On a cloudy day photographing gulls in flight, my former 50D just could not AF fast enough in the dismal light, so I tried the 1D3...no problem! The files are very low on noise...I feel comfortable going 1+ stops higher than I ever did before. And that battery...what longevity! If I am going out to shoot amphibians in the rain, this is my body (due to waterproofing).